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Explorer Geophysical Corner By Gabriel Gil,John Castagna,Kenneth Bredesen,Oleg Portniaguine,Ritesh Sharma,Satinder Chopra

Phase Decomposition and Its Applications

Phase decomposition is a novel technique that decomposes a composite seismic signal into different phase components, which can improve reservoir characterization. The technique is particularly useful in those areas where thin-bed interference causes the phase of the input seismic response to differ from the phase of the embedded wavelet in the data.

Added on 01 February, 2022

Explorer Article By David Brown

Developing Tight Oil Resources in the Middle East

When the International Petroleum Technology Conference comes to Saudi Arabia in February, the technical program will include a significant look at both unconventional oil and gas and conventional tight oil in the Middle East. Those are two different concepts in the region and the distinctions are important. The Middle East holds a large conventional tight oil resource, now emerging as a serious focus for development. With so much recent attention devoted to unconventional resources, conventional tight oil could be considered an overlooked sibling.

Added on 01 February, 2022

Explorer Article By Ken Milam

How to Grow Big Fields into Giants

Thanks to continuing advances in reservoir characterization, technology and innovative thinking, many oil fields around the globe have “grown larger” in recent decades. John Sneider, president of Sneider Exploration Inc., documented examples of mature field growth 20 years ago and recently revisited the topic to focus on mature giant fields. This updated analysis is detailed in chapter 4 of the new AAPG Memoir 125: “Giant Fields of the Decade: 2010 – 2020.”

Added on 01 January, 2022

Explorer Geophysical Corner By Kenneth Bredesen,Kurt Marfurt,Ritesh Sharma,Satinder Chopra,Thang Ha

Unsupervised Machine Learning for Characterizing a Geothermal Sandstone Reservoir

The estimated hydrocarbon reserves around the world, when produced, can keep us going for the next several decades. But scientific records and our own experiences are enough evidence that climate change is indeed happening. Addressing it requires energy extraction from non-fossil fuels. One such resource is the natural heat of the Earth, or geothermal energy.

Added on 01 January, 2022

Explorer Article By Barry Friedman

The Cosmic and the Personal

Coming Soon to a Theater Near You: AAPG Member Glen Penfield’s life-changing discovery of the Chicxulub asteroid crater is the subject of a new movie.

Added on 01 January, 2022

Explorer Geophysical Corner By Kurt Marfurt,Renjun Wen,Rongfeng Zhang,Satinder Chopra

AI Application to Seismic Fault Interpretation

Fault interpretation on seismic data has always been a laborious task, especially for large 3-D seismic volumes. Whereas horizon autopicking has advanced significantly during the past three decades, automated seismic fault interpretation lags behind. Fortunately, recent applications of artificial intelligence (deep learning) processes for identifying faults provide significant promise for the future.

Added on 01 December, 2021

Explorer Article By Phil Wannamaker,Virginie Maris

Casting Sunlight on the Deep Heat Sources with Magnetotelluric Geophysical Imaging

The eastern Great Basin of western Utah has long been known as a high heat flow region containing young volcanic rocks and several producing hydrothermal systems. The Utah FORGE Enhanced Geothermal Systems project seeks to advance technology to extract the heat in the huge volumes of hot rock underground, identified or strongly suspected, that do not currently possess adequate permeability. Resolving the underlying mechanisms that have heated such volumes should not only help characterize the magnitude of an individual resource but also create a pathfinder for discovering other systems, both EGS and hydrothermal.

Added on 01 November, 2021

Explorer Geophysical Corner By Kenneth Bredesen,Renjun Wen,Ritesh Sharma,Rongfeng Zhang,Satinder Chopra

Colored Inversion and Its Application

Seismic inversion for acoustic impedance is widely used in our industry today, mainly due to the ease and accuracy of interpretation of impedance data, but also because it allows an integrated approach to geological interpretation. In a series of three prior articles of Geophysical Corner, the application of the different methods for transformation of stacked, prestack and multicomponent seismic data into impedance data were described. In this month’s column we revisit one of the methods, namely colored inversion, to describe in detail the methodology entailed and its application to a seismic dataset from Denmark.

Added on 01 November, 2021

Explorer Geophysical Corner By Alexandro Vera-Arroyo,Heather Bedle,Karen Leopoldino-Oliveira

Comparison of Machine Learning and Modeled Logs for Volumetric Assessment

As geoscientists, we are predisposed to associative thinking. Trained for pattern recognition by our education and experiences, we have learned to recognize familiar elements in a new dataset and integrate those pieces of information into a subsurface geological model. However, this learning system is usually biased and most of the time we are unaware of it. With the increasingly common use of machine learning in our workflows to bolster human interpretation, we must become increasingly aware of our biases, so that they they can be minimized as we train the algorithms. Herein is a case study and bias discussion from the Ceará Basin in Brazil, where deep convolutional neural networks are used to aid in the petrophysical analysis and volumetric assessment of a potential reservoir.

Added on 01 October, 2021

Explorer Historical Highlights By Michael Morton

Where Geologists Fear to Tread

To most outsiders in the 1950s, the Buraimi Affair was a passing curiosity, a faraway squabble about territorial rights in a remote corner of southeast Arabia known as the Buraimi Oasis. The British government backed its protégés, Abu Dhabi and Oman, against Saudi Arabia, while the United States government took a mediating role. However, as the Time magazine report suggested, there was another aspect to the dispute: it was rumoured that Buraimi was “floating on a pool of oil.”

Added on 01 October, 2021

Short Course

Houston, Texas

Friday, 28 April 2023, 9:00 a.m.–12:00 p.m.

SC 04: Integrating Geophysics into Geologic Carbon Storage Workflows from Scoping to Monitoring

To go through the different stages of a CCS project and discuss which geophysical data/methods are pertinent: workshop format with short presentation and lots of discussion/Q&A

Added on 21 February, 2023

Short Course

Houston, Texas

Friday, 28 April 2023, 8:00 a.m.–5:00 p.m.

SC 03: The Techniques and Business Aspects of Carbon Capture, Utilization and Storage and the CO₂ Storage Resources Management System (SRMS)

As part of the international effort to combat global warming, significant attention is being given to ways to sequester (store for the long-term) carbon dioxide, which is a major contributor to the greenhouse effect. This one-day course will look at some of the ways in which carbon dioxide can be stored and provide a detailed review of the SRMS framework prepared by the Society of Petroleum Engineers to classify and categorize the storage volumes.

Added on 21 February, 2023

Workshop

Kuala Lumpur, Malaysia

Monday, 2 October – Tuesday, 3 October 2023, 8:00 a.m.–5:00 p.m.

AAPG/EAGE New Discoveries in Mature Basins

AAPG and EAGE have teamed up to deliver the upcoming New Discoveries in Mature Basins workshop to be held from 2-3 October 2023 in Kuala Lumpur, Malaysia. Save the date! Registration to open soon.

Added on 28 November, 2022

Workshop

Khobar, Saudi Arabia

Monday, 9 October – Wednesday, 11 October 2023, 8:00 a.m.–5:00 p.m.

5th Edition: Siliciclastic Reservoirs of the Middle East

Mark your calendars and save the date to attend the 5th edition of the AAPG Siliciclastic Reservoirs of the Middle East GTW which will be held for the first time in Al-Khobar, Saudi Arabia from 9-11 October 2023. We look forward to having you on board for the new edition of these popular series.

Added on 16 November, 2022

Workshop

Khobar, Saudi Arabia

Monday, 4 March – Wednesday, 6 March 2024, 8:00 a.m.–5:00 p.m.

4th Edition: Stratigraphic Traps of the Middle East

Join us for the 4th Edition of: "Stratigraphic Traps of the Middle East" workshop. The workshop will be hosted by AAPG in Al Khobar, Saudi Arabia 4-6 March 2024.

Added on 16 November, 2022

Workshop

Khobar, Saudi Arabia

Monday, 8 May – Wednesday, 10 May 2023, 8:00 a.m.–5:00 p.m.

2nd Edition: AAPG/SPWLA Low Resistivity Reservoirs: Path to Explore, Discover and Develop

“Wait! There is a short cut. Turn right from here”. That’s probably the sound of an electric current bypassing the resistive hydrocarbons, in a maze or network of porous media, when traveling from transmitter to receiver. This workshop will serve the participants need with the up to date advancements in describing and characterizing low resistivity and low contrast pay, and eventually, maximize resources.

Added on 15 November, 2022

Workshop

Paramaribo, Suriname

Thursday, 30 November – Friday, 1 December 2023, 8:00 a.m.–5:00 p.m.

Maturing Sustainable Solutions to, Explore, Develop and Produce Oil and Gas Across the Guyana Suriname Basin

Plan now to attend an interactive in-person workshop with industry leaders, government representatives and technical experts working in the Guyana-Suriname Basin.

Added on 02 November, 2022

Workshop

Rio de Janeiro, Brazil

Tuesday, 9 May – Wednesday, 10 May 2023, 8:00 a.m.–6:00 p.m.

The Importance of Exploration and Production in the Energy Transition

Plan now to attend an interactive in-person workshop with industry leaders, government representatives and technical experts working to help Brazil maintain its E&P capacity while transitioning to a decarbonized economy.

Added on 10 October, 2022

Workshop

Lviv, Ukraine

Thursday, 21 September – Friday, 22 September 2023, 8:00 a.m.–5:00 p.m.

Basin Evolution and Prospectivity in Flexural and Rift Basins

Join us for a workshop where experts will explore the Carpathian foreland and the Dnieper-Donetsk rift basins with a focus not only on hydrocarbons, but the utilization of geothermal resources, hydrogen exploration and CCUS.

Added on 01 December, 2021

Field Seminar

Lisbon, Portugal

Tuesday, 20 June 2023, 8:00 a.m.–5:00 p.m.

Late Jurassic Deep Water Depositional Systems from the Late Jurassic of the Lusitanian Basin

Come along on this 1-day field seminar and tour outcrops in the Serra de Montejunto, just north of Lisbon and on the coast from Porto Novo to Paimogo. Instructors: Ricardo Pereira, GeoBioTec - Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa. Gil Machado, ChronSurveys Lda & Instituto Dom Luiz Fees: €190 - Local VAT applicable Limit: 20 Participants Includes: Ground Transportation Snacks and Refreshments Lunch and Dinner Guidebook Departure Time/Location 20 June 2023 8:30am Hotel Dom Pedro Note:Transportation to start point is not included in the costs of this trip. Please bring clothing for hot day time temperatures (sun hat/ sun glasses/ sun cream etc.). Participants must wear suitable and comfortable light trekking shoes. Aims To gain or increase an understanding of the tectono-sedimentary processes of continental extension and rifting supported by outcrop observations, with focus on deep-depositional marine systems. Discuss implications for prospective petroleum systems. Promote debate and nourish new insights between attendants. About the Field Trip The Lusitanian Basin records the proximal events of syn- to post rift evolution of the hyper-extended West Iberian Margin, showing some outstanding examples of the combined tectono-stratigraphic depositional systems. Here, the Late Jurassic reveals diverse aspects of mixed marine depositional systems including not only submarine fans and turbidites, but also the build-up of carbonate reefs and shoreface to fluvial clastic sequences. Throughout the field trip the different depositional aspects can be observed in detail to demonstrate how such depositional systems can vary in time and space. Observation of these outcrops allows a better understanding on how deep-water depositional systems can change within a sub-basin and help improving the understanding of reservoir properties.

Added on 06 February, 2020

Workshop

Lisbon, Portugal

Wednesday, 21 June – Thursday, 22 June 2023, 8:00 a.m.–5:00 p.m.

Mixed/Hybrid Systems (Turbidite, MTDs and Contourites) on Continental Margins

This 3-day conference brings together diverse experts working on modern and ancient turbidite, MTDs, contourite and hybrid/mixed systems in order to improve the present-day knowledge, models and predictive power.

Added on 06 February, 2020

Online e-Symposium

Thursday, 11 February 2010, 12:00 a.m.–12:00 a.m.

Predicting Gas Hydrates using Pre-stack Seismic data in Deepwater GOM

Gas hydrates, ice-like substances composed of water and gas molecules (methane, ethane, propane, etc.), occur in permafrost areas and in deep water marine environments.

Added on 02 December, 2013

Online e-Symposium

Thursday, 30 October 2014, 10:00 a.m.–11:00 a.m.

Kerogen Maturity Determinations: New Techniques and Technologies

Cross disciplinary workflows play an important part of successful characterization of shale reservoirs. This course discusses how the artificial kerogen maturity of organic-rich Green River shale affects the petrophysical, micro-structural, geochemical and elastic properties.

Added on 05 August, 2014

Online e-Symposium

Thursday, 30 August 2012, 12:00 a.m.–12:00 a.m.

Mississippian Carbonates in Kansas: Integrating Log, Core & Seismic

The entire Middle Pennsylvanian–to–top Precambrian basement (500 m) interval was cored in early 2011 in the BEREXCO Wellington KGS #1-32 well in Wellington Field, Sumner County, KS.

Added on 11 December, 2013

Online e-Symposium

Thursday, 29 September 2011, 12:00 a.m.–12:00 a.m.

Application of Inversion and Clustering Analysis in Unconventional Reservoirs

This study will focus in the combination of λρ – μρ inversion with clustering analysis techniques in order to discriminate brittle zones in the Barnett Shale.

Added on 11 December, 2013

Online e-Symposium

Thursday, 17 February 2011, 12:00 p.m.–1:00 p.m.

Siliclastic Sequence Stratigraphy: Application to Exploration and Production

This presentation is designed for exploration/production geologists and geological managers or reservoir engineers.

Added on 02 December, 2013

Online e-Symposium

Tuesday, 25 January 2011, 12:00 a.m.–12:00 a.m.

Integrating Disciplines, Data and Workflows in Resource Plays

This esymposium takes a close look at workflows associated with resource plays, and analyzes where integration must occur between disciplines, data, and workflows at all phases of the process.

Added on 02 December, 2013

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VG Abstract By Juan I. Soto

Salt versus Shales in Continental Margins and Orogens

In comparison with the known boundary conditions that promote salt deformation and flow in sedimentary basins, the processes involved with the mobilization of clay-rich detrital sediments are far less well established. This talk will use seismic examples in different tectonic settings to document the variety of shale geometries that can be formed under brittle and ductile deformations.

Request a visit from Juan I. Soto!

Added on 26 June, 2019

DL Abstract By Jacob Covault

Submarine-Channel Evolution From Seismic Stratigraphy & Numerical Models: Patterns and Predictions Revisited

Three-dimensional (3D) seismic-reflection surveys provide one of the most important data types for understanding subsurface depositional systems. Quantitative analysis is commonly restricted to geophysical interpretation of elastic properties of rocks in the subsurface. Wide availability of 3D seismic-reflection data and integration provide opportunities for quantitative analysis of subsurface stratigraphic sequences. Here, we integrate traditional seismic-stratigraphic interpretation with quantitative geomorphologic analysis and numerical modeling to explore new insights into submarine-channel evolution.

Request a visit from Jacob Covault!

Added on 20 July, 2022

DL Abstract By Frank Peel

A Lost World Rediscovered: 3D Seismic Data Reveal Spectacular Images of a Jurassic Landscape on the Eve of Louann Salt Deposition in the Gulf of Mexico, with Implications for Salt Deposition

Around 170 million years ago, the Gulf of Mexico basin flooded catastrophically, and the pre-existing landscape, which had been a very rugged, arid, semi-desert world, was drowned beneath an inland sea of salt water. The drowned landscape was then buried under kilometers of salt, perfectly preserving the older topography. Now, with high-quality 3D seismic data, the salt appears as a transparent layer, and the details of the drowned world can be seen in exquisite detail, providing a unique snapshot of the world on the eve of the flooding event. We can map out hills and valleys, and a system of river gullies and a large, meandering river system. These rivers in turn fed into a deep central lake, whose surface was about 750m below global sea level. This new knowledge also reveals how the Louann Salt was deposited. In contrast to published models, the salt was deposited in a deep water, hypersaline sea. We can estimate the rate of deposition, and it was very fast; we believe that the entire thickness of several kilometers of salt was laid down in a few tens of thousands of years, making it possibly the fastest sustained deposition seen so far in the geological record.

Request a visit from Frank Peel!

Added on 16 November, 2022

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